Finding a functioning voice changer for Discord on Ubuntu (Kubuntu)?

I've been trying to find (or make) a voice changer for a project I have with some friends for a tabletop gameo ver Discord, which includes (for me) role-playing as a robot. Thing is, I can't find any real-time voice modifier/changer/modulator that works on Ubuntu (Or Kubuntu, the flavor I'm currently using), and can also be detected in Discord as a viable Input Device. Reading other forum posts, I've tried the following:

• [pyvoicechanger](https://github.com/juancarlospaco/pyvoicechanger), which only works on pitch, and Discord can't detect.
• Jack Rack, which Discord doesn't support at the moment (See [this issue](https://support.discordapp.com/hc/en...-at-least-ALSA))
• And finally, according to these two already asked questions ([one](https://askubuntu.com/questions/1091...fically-ubuntu) and [two](https://askubuntu.com/questions/4219...ice-on-the-fly)), sox.

The last one is the only one I haven't confirmed as "not working" since, according to the mentioned \[seconds post\]\[4\], it requires outputting the audio to a "null sink", [which neither Chrome nor any other Ubuntu recorder/app detects](https://i.stack.imgur.com/nK1LK.png)

So, what I want to ask is: Is there an alternative to voice changer, being manual modulators using chorus, pitch, etc; or simple voice changers using defined settings ("robot", "giant", "helium voice", etc) that can work with different apps in Ubuntu (That is to say, Kubuntu)? (Or at least with Discord)

Note: I've checked similar post to this, but they are from 2010 and they all recommend asterisk voice changer (Which only allows pitch adjusting)